1. Concept of vinylic halide

A vinylic halide is a compound in which the halogen atom is directly attached to an $sp^2$ hybridized carbon of a carbon-carbon double bond.

Its general form is:

where $X$ is a halogen.

Examples:

• $\ce{CH2=CHCl}$ (vinyl chloride)
• $\ce{CH3-CH=CHBr}$ if Br is directly attached to the double-bond carbon

2. How to identify it

To be a vinylic halide:

• there must be a $\ce{C=C}$ double bond,
• and the halogen must be attached directly to one of the two double-bonded carbons.

3. Issue with the given options

The options $A, B, C, D$ are blank in the question provided, so the structures cannot be explicitly checked one by one.

4. Comparison with stored answer

Since the stored correct answer is D, and the question asks for an example of a vinylic halide, option D must correspond to a compound where halogen is directly attached to a double-bond carbon, such as:

Therefore, I accept D as the correct answer based on the stored key.

5. Final answer

The correct option is: